Looking to install a wideband on my 03 Cobra to keep an eye on things. I thought I remebered reading a post a while ago that someone on here was making them. Looking for some product recommendations.

Mopar has a setup for sale, you just need to buy the sensor IIRC.

http://www.themustangshop.ca/product/2549961/300435 this is a great product i got this for my procharged gt works great and more accurate then the AEM unit.

The are both accurate to within .1 AFR so how is it better that the aem.

The DIY ones work good but don't have an enclosure or anything for the main PCB or the display so you'd have to shag around and make or buy something.

I have an AEM UEGO in my car that uses a round standard size gauge to show the AF, I fully recommend it. It's $250 on here: https://www.rtmracing.com/xcart/home.php?cat=958 <- These guys are Canadian and have awesome service.

I would not recommend the AEM gauge/sensor if you are planing on using it to output a signal to a logger or to an ECU.
I ( & Johnathan with the white s14) as well as several others online have had problems with the gauges display and output not being equal.

It was so bad for me that setting the afr target to 12.75:1 resulted in ~11.25:1 on the gauge face. I ended up changing my targets to correct for this but thats not what I had in mind when I spent crazy money on a wideband, I wanted accuracy.

Thanks for the info guys, Still researching them.

Strange, I have my AEM connected to one of my ECU inputs for logging and the values are bang on with the gauge. Luc you know there were different versions of the AEM that had different voltage outputs on the signal line right? Perhaps that's the issue in your case.

The one I have has the 5 way adjustable output knob on the rear. Ive had it set to "P0" 10:1-18:1 1-5 volts and no matter what I do with the wideband selection settings in megatune/megalogviewer I always end up with a discrepancy between gauge and laptop.

I just ordered an AEM digital wideband from www.thmotorsports.com for 185.00 US w/ free shipping.

Myself and 2 other DSM'ers just got this one
http://www.ngk.com/afx

It comes highly recommended, even more so than the AEM.

Jim